Cool Math
Coolmath: Coolmath4kids: Fractions
A set of 17 short tutorials on everything to do with fractions. Begins with a basic introduction to what fractions are, and covers topics such as mixed numbers, improper fractions, comparing fractions, simplifying them, and operations...
Primary Resources
Primary Resources: Fractions
An extensive selection of teacher resources dealing with fractions at many different levels. There are worksheets, PowerPoints, smartboard presentations, activities, Excel, Word, and pdf files for the teacher's use.